Copyright: © 2006 Scott E. Baird and Helen M. Chamberlin. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. To whom correspondence should be addressed. E-mail: scott.baird@wright.edu or chamberlin.27@osu.edu Caenorhabditis briggsae methods* Scott E. Baird, Department of Biological Sciences, Wright State University, Dayton, OH 45435-0001 USA Helen M. Chamberlin, Department of Molecular Genetics, The Ohio State University, Columbus, OH 43210-1292 USA